If you want my simplistic explanation... I believe that betrayal is nothing more than having an expectation of someone that outweighs their personal gains. Ultimately every relationship has two sides where both people gain something, may it be based on genuine companionship or personal gain, only time will tell, but ultimately every time you are let down it hopefully makes you appreciate the people who truly have your back. I realize that is an overly optimistic approach to it, but as much as it hurts to feel like you knew someone and to completely trust someone, why beat yourself up over it. Hopefully you were true to who you are through the entire situation, and if not ask yourself why, but tomorrow still comes. Life goes on day after day, until one day it doesn't, but why be afraid.
I believe that there is a polarity to everything and you must try to see both sides before you can move forward, as you cannot be ruled by anger or lust, but instead find serenity somewhere in the middle
I know that is difficult as well, but my moral compass and conscious weighs heavy on my decisions and although I am not perfect, I continuously challenge myself to become a better person.
You talk about your best friend betraying you and your mom's words of wisdom, well my mom was ultimately the one who betrayed me most in my life. I grew up in a broken family like most people of our generation and unfortunately I thought that conforming to my mom's expectations would be the best way to create as little animosity within the household as possible. Unfortunately through the process I lost sight of who I was as a person. Through reflection I realized that by meeting her demands I only allowed her to set higher expectations of me, but she never got to know the real me, as I had yet to discover who I was. Not until college was I able to come into my own as a person, but I felt I had lost many years of my life. Ultimately, through repeat failed attempts at expressing who I am as a person and what I stand for in life a rift was created that took us to the point of not speaking to each other anymore. Add in a lying, controlling, manipulative, digressive step-father and the situation led to me finding a new home, but as a result I got to know my father better.
I know a short synopsis of a life does not depict an understanding, but thus is my point; Every person has their own perspective of reality, what you believe to be true is ultimately true to you, thus there is no absolute truth unless everyone agrees accordingly. However, since no two people have ever experienced life in the same manor, as that would mean they would have had to live the exact same life at the exact same time, no one will ever truly understand your perspective. The challenge in life is having the audacity to be you, regardless of the people surrounding you and ultimately you will attract friends of like kind. As your friends are nothing more than a reflection of who you are, which is why you trust them more so than strangers.
bad things do happen in life and there might be people who will hurt us in one way or another,..but one thing ive learned is that people are not the same..there might be some who will betray us but there will still be those who can be loyal more than what we can think...and about finding a nice girl,,you shouldn't close your mind to the fact that they might betray you...there are still nice girls..they exist...all you just need to do is to open your heart and mind to the possibilities of finding one...
But as you said, all you need to do is open your heart and mind to the possibilities of find one. To every situation there is the choice of yes or no. To which you did or did not ultimately led you to where you are today and thus where you may be tomorrow. So why close a door before it is even open through a negative attitude.